[Giant secondary vaginal calculus].

The development of a large vaginal stone in a 25-year-old female, correlated with vesicovaginal fistula, is presented. The stone, composited of struvite and carbonate apatite, formed around non-absorbable surgical suturing material in urine with urease producing (P. mirabilis) bacterial infection. The stone was removed by simple lithotripsy technique. Attention is taken for the importance of stone prevention.